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An interesting article has just been published in J. Cheminformatics describing the Chemistry Development Kit to provide an open source chemistry database.

OrChem - An open source chemistry search engine for Oracle

Journal of Cheminformatics 2009, 1:17doi:10.1186/1758-2946-1-17

“Here we present OrChem, an extension for the Oracle 11G database that adds registration and indexing of chemical structures to support fast substructure and similarity searching. The cheminformatics functionality is provided by the Chemistry Development Kit. OrChem provides similarity searching with response times in the order of seconds for databases with millions of compounds, depending on a given similarity cut-off. For substructure searching, it can make use of multiple processor cores on today's powerful database servers to provide fast response times in equally large data sets.”
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